Metal axle.



PATENTED JAN. 2, 1906.

B. EINFELDT. METAL AXLE.

No. 808,735. PATENTED JAN. 2, 1906.

E. EINPELDT.

METAL AXLE.

APPLICATION FILED NovA 9, 1904.

i 2 SHEETS-SHEET 2.

22g. cf

@Suma/Hoz anciana.'

formation.

uNiTED STATES PATENT OFFICE.

METAL WHEEL OOMPAN Y,

A CORPORATION OF IOWA.

METAL AXLE.

Specification of Letters Patent.

Patented Jan. 2, 1906.

Application filed November 9, 1904. Serial No. 232,055.

To all whom it may concern.-

Be it known that I, EMiL EINFELDT, ot' Davenport, county of Scott, and State of Iowa, have invented a new and useful Improvement in Metal Axles, of which the following is a specification.

The object of this invention is to producea metal axle of great stength and durability and as an integral construction; and the invention consists of an axle made of a section of flanged bar, said axle embodying the novel characteristics defined by the claims.

Figure l is a perspective view of my improved axle. Fig. 2 is a side elevation of the same. Fig. 3 is a vertical transverse section on the line a t of Fig. 2 looking in the direction of the arrows. Fig. 4L is a similar view on the line b of Fig. 2. Fig. 5 is a hori- Zontal longitudinal section on the line c c of Fig. 2. Fig. 6 is a cross-section of the blank from which the axle is formed. Figs. 7, 8, and 9 are cross-sectional views showing the bearing-spindles in their different stages of Fig. 10 is a side elevation of the completed axle.

l represents the body of the axle, comprising a vertical central longitudinal web 2 and two horizontal parallel longitudinal flanges 3, connected with the web and projecting laterally at opposite sides of the same.

4 4L represent bearing-spindles at the ends of the body portion and formingintegral continuations of the same. Each of the spindles comprises a vertical web 5 of relatively greater thickness and of relatively less height than the web 2, and two transversely-curved flanges 6, extending laterally from the web 5 and conjointly presenting a rounded bearing-surface.

7 7 represent shoulders formed at the inner ends of the spindles and at the outer sides of the same, where the rounded flanges unite with the flat anges of the body portion, and 8 8 represent shoulders at the inner end of' the web 5 on opposite sides of the same, where it unites with the web 2.

The metal composing the web of the spindles is condensed and upset both longitudinally and transversely, and is thus rendered compact and given great resisting power. The metal composing the curved flanges of the spindle is also'condensed and upset, and likewise the shoulders 7.

As a result oi' this construction an axle is produced in the form of a unitary structure,

the bearing-spindles forming integral continuations of the body portion, the metal of which is structurally of a different character from that of the body portion oi' the axle, this metal being compacted and condensed and being thus given great strength and durability. Y

In proceeding to form an axle of this construction I iirst provide a section of commercial I-beam, such as illustrated in Fig. 6. By suitable means the end of the blank which is to form the bearing-spindle is subjected to pressure in the direction of the web, and this latter is thus condensed or upset and reduced in height and thickened, as illustrated in Fig. 7. The reduced end of the blank is next acted on by suitable devices, which serve to bend the lateral flanges into rounded form, as' illustrated in Figs. 8 and 9, after which the blank is held by suitable means and subjected to pressure longitudinally endwise, so as to upset the spindle end and raise the shoulders 7 at a point where the curved flanges unite with the fiat flanges.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A metal axle comprising a body portion and integral bearing-spindles, the body portion being composed of a web and flat longitudinal flanges, and the bearing-spindles being composed of a web of greater thickness and of less height than that of the body portion, and forming an integral continuation of the latter, and curved flanges forming integral continuations of the flat iianges o1 the body portion.

2. A metal axle consisting of a single section of commercial I-beam, comprisinga main body portion and integral bearing-spindles` the body portion having flat flanges and a longitudinal connecting-web, and the bearingspindles havinga thickened web and inwardlycurved flanges with longitudinal spaces between the flanges and the web, and two bearing-shoulders at opposite sides of the bearing-spindle at its inner end, said shoulders being formed wholly of the metal of the flanges and presenting projections at two sides only of the spindle.

3. An axle embodying a section of I-beam having the web at the end of the section thickened, condensed and reduced in height, and the flanges at the end curved inward toward each other to present a rounded bearing-surthickened, and the ends of the flanges curved face with longitudinal spaces between the inward to form a bearing and spindle, and

Curved langes and the web. shoulders at the inner end of the spindle, con- 4. An axle embodying a section of flanged sisting of the upset metal of the flanges. I5 5 bar having the {ianges at the end curved to In testimony whereof I hereunto set my form a bearing-spindle, and integral shoulhand, this 19th day of October, 1904, in the ders at the inner end of the bearing-spindle, presence of two attesting Witnesses.

said shoulders being formed of the upset metal of the flanges. 4 Witnesses: 1Q 5. A metal axle comprising a section of I- NATHL. FRENCH,

beam, with the web at the end condensed and M. LOUISE DODGE.

EMIL EINFELDT. 

